ampk: add pc encrypt tool [1/1]

PD#SWPL-177486

Problem:
Need a tool to encrypt secrets for AMPK

Solution:
Add python script to do it

Verify:
./gen_keypair.py -k vendor_priv.pem -u vendor_pub.pem -v
./encrypt_secret.py -k vendor_priv.pem -d $(cat device-pub.txt) -i
dgpk1.bin  -o edgpk1.bin -x edgpk1.txt -v

Change-Id: Ib973da46a3bee0c3aa51ece6c1d59083fe953967
Signed-off-by: Lawrence Mok <lawrence.mok@amlogic.com>
3 files changed